random birates reported on some streams

We've just noticed that some streams report the wrong bitrate. If we 
play it on windows media player it reports the correct bitrate.

We're using cayene_1_5_0.

We think it's only some MP3 streams that are affected, but are checking now.

eg


js@dobblers:~/proj/sp257-a-865-a/src$ ./splay http://frnk.livejournal.com/
Simpleplayer is looking for the client core at ./clntcore.so
Common DLL path DT_Common=.
Plugin path DT_Plugins=.
Codec path DT_Codecs=.
opening http://frnk.livejournal.com/ on player 0
----------------clip info--------------------
========Source 0========
====File Header====
StreamCount 1
LiveStream 1
Title LiveJournal Voice Posts
    0x4c  0x69  0x76  0x65  0x4a  0x6f  0x75  0x72  0x6e  0x61  0x6c  
0x20  0x56  0x6f  0x69  0x63
    0x65  0x20  0x50  0x6f  0x73  0x74  0x73  0x00
====Stream 0====
StreamNumber 0
AvgBitRate 813944090
SampleRate 11025
SamplesPerSecond 11025
NumChannels 1
Channels 1
Preroll 3000
Duration 0
MaxPacketSize 1024
AvgPacketSize 2048
StartTime 0
IsAudioStream 1
PostDecodeDelay 1000
LiveSyncStartTime 0
MimeType audio/MPEG-ELEMENTARY
ASMRuleBook AverageBandwidth=813944090, AverageBandwidthStd=0, Priority=9;
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